Need help identifying this strange object we found in our Pieris japonica. It was the shape of a wasp nest. It was very dense not hollow. It had no obvious openings. It was attached to a branch but the branch did not go through it. It had moss, lichen, a few small feathers, something that looked like string and I don’t know what the bulk of it was made up of. It didn’t pull apart easily and it felt more like I had to tear it open. I’m just very interested in knowing what this could be. It did no damage to the tree.